Named as one of the â€œWhoâ€™s who of the crypto-currency worldâ€ by The Wall Street Journal, Mr. Roszak is a Bitcoin investor, advocate and speaker. He has spent over 20 years in private equity and venture capital with Advent International, Keystone Capital Partners, Platinum Venture Partners and SilkRoad Equity, and has invested over $1 billion of capital (from start-up to IPO) in a broad range of industries.